OB013
Life, material transport and element cycling in the hadal realm

Session ID#: 84572

Session Description:
The hadal zone stretches from 6 to 11 km of ocean depth and is one of the most remote, extreme, and scantly explored habitats on Earth. However, recent technological advances and the intensified search for new marine resources have stimulated hadal research and the number of publications on hadal issues is increasing rapidly. This multidisciplinary session would like to invite researchers with hadal interests to discuss recent advantages, synergies and emerging challenges across a broad range of topics covering geology, oceanography, biology and biogeochemistry. We also encourage contributions on deep sea technical advances and high-pressure research.
Index Terms:

4804 Benthic processes, benthos [OCEANOGRAPHY: BIOLOGICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL]
4894 Instruments, sensors, and techniques [OCEANOGRAPHY: BIOLOGICAL]

Primary Chair:  Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark
Co-chairs:  Frank Wenzhofer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany, Matthias Zabel, Univ Bremen, Bremen, Germany and Doug Bartlett, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
Primary Liaison:  Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark
 
Burial of Terrigenous Materials in the New Britain Trench, Paupa New Guinea (637269)
Min Luo1, Gang Lin2, Binbin Pan2 and Duofu Chen3, (1)Shanghai Ocean University, College of Marine Sciences, Shanghai, China, (2)Shanghai Ocean University, Shanghai, China, (3)College of Marine Sciences, Shanghai Ocean University, Shanghai, China
 
Intra- and inter-trench heterogeneity of sedimentary organic carbon revealed by composition, sources and age in Kermadec Trench and Atacama Trench (639515)
Yunping Xu1, Min Luo1, Xinxin Li2, Jiasong Fang1 and Ronnie N Glud3, (1)Shanghai Ocean University, College of Marine Sciences, Shanghai, China, (2)South University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China, (3)University of Southern Denmark, Department of Biology, Odense, Denmark
 
Rust in the Abyss: Investigating the Effects of High Hydrostatic Pressure on Microbially Influenced Corrosion. (641937)
Federico Lauro1, Lucinda E. Doyle2, Pauliina Rajala3, Enrico Marsili4, Jamie Hinks3, Matteo Seita3 and Scott A. Rice3, (1)Nanyang Technological University, Asian School of The Environment, Singapore, Singapore, (2)Indian Institute of Technology Delhi, India, (3)Nanyang Technological University, Singapore, Singapore, (4)Nazarbayev University, Kazakhstan
 
Tracking Environmental Change of the Hadal Zone of the Yap Trench: from Variations of Biogeochemical Parameters in the Sediment and Seawater (641998)
Haibing Ding1, Yuhuan Huang1, Chaonan Guo2, Jiaohong Niu2, Gehui Li2, ChengJun Sun3 and Guipeng Yang4, (1)Ocean University of China, Qingdao, China, (2)Ocean University of China, Marine Chemistry, Qingdao, China, (3)First Institute of Oceanography, Ministry of Natural Resources, Marine Resources and Environment Research Center, Qingdao, China, (4)Laval University, Quebec-Ocean, Quebec City, QC, Canada
 
Microbial respiration in hadalpelagic realm of Atacama Trench (642015)
Xinxin Li, South University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China, Xin Zhao, Southern University of Science and Tehnology, Department of Ocean Science and Engineering, Shenzhen, China, Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark, Osvaldo Ulloa, Universidad de Concepción, Concepción, Chile, Igor Fernandez-Urruzola, Universidad de Concepcion, Millennium Institute of Oceanography, Concepción, Chile and Wenpeng Li, Southern University of Science and Technology, Department of Ocean Science and Engineering, Shen Zhen, China
 
Distribution and Drivers of Benthic Biodiversity in Hadal and Abyssal Realms through eDNA based Inventorie (642035)
Sophie Arnaud Haond1, Miriam I Brandt2, Blandine Trouche1, Nicolas Henry3, Ariane Atteia4, Julie Poulain5, Patrick Wincker6, Colomban de Vargas7, Matthias Zabel8, Frank Wenzhofer9, Ronnie N Glud10 and Daniela Zeppilli11, (1)IFREMER, Plouzané, France, (2)IFREMER, MARBEC, Sète, France, (3)Sorbonne Université, CNRS, Station Biologique de Roscoff, Roscoff, France, (4)CNRS, MARBEC, Sète, France, (5)Genoscope, Evry, France, (6)CEA–Institut de Génomique, GENOSCOPE, Evry, France, France, (7)Station Biologique de Roscoff, Sorbonne Université & CNRS, Roscoff, France, (8)Univ Bremen, Bremen, Germany, (9)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany, (10)University of Southern Denmark, Department of Biology, Odense, Denmark, (11)IFREMER, EEP-LEP, Plouzané, France
 
Comparisons of Microbial Life in the Kermadec and Mariana Trenches (642182)
Doug Bartlett, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
 
High Benthic Transfer Rates with Low Concentrations of Organic Carbon – No Contradiction in the Atacama Trench (642385)
Matthias Zabel1, Pei-Chuan Chuang2, Emmanuel Okuma1, Marcus Elvert3 and Martin Kölling4, (1)MARUM - University of Bremen, Bremen, Germany, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)Marum, Bremen, Germany, (4)MARUM - Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
 
Benthic nitrogen cycling in hadal trenches: High rates and large contributions from anammox (642857)
Bo Thamdrup1, Clemens Schauberger1, Morten Larsen1, Anni Glud1, Frank Wenzhofer2 and Ronnie N Glud1, (1)University of Southern Denmark, Department of Biology, Odense, Denmark, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany
 
Particles Contributed to Microbial Respiration in Hadalpelagic Realm of Atacama Trench (643092)
Xin Zhao, Southern University of Science and Tehnology, Department of Ocean Science and Engineering, Shenzhen, China, Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark, Osvaldo Ulloa, Universidad de Concepción, Concepción, Chile, Igor Fernandez-Urruzola, Universidad de Concepcion, Millennium Institute of Oceanography, Concepción, Chile, Wenpeng Li, Southern University of Science and Technology, Department of Ocean Science and Engineering, Shen Zhen, China and Xinxin Li, South University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China
 
Response of Epipelagic Marine Microorganisms to High Hydrostatic Pressure: “Marine Snow” Experiments in a Rotating Pressure Tank (643932)
Peter Stief1, Morten Larsen2 and Ronnie N Glud2,3, (1)University of Southern Denmark, Department of Biology, Odense M, Denmark, (2)University of Southern Denmark, Department of Biology, Odense, Denmark, (3)Tokyo University of Marine Science and Technology, Department of Ocean and Environmental Sciences, Tokyo, Japan
 
Autonomous hadal benthic lander for in situ tracer incubations and sediment recovery to study benthic community activities (645126)
Johannes Lemburg1, Frank Wenzhofer2, Morten Larsen3, Bo Thamdrup4 and Ronnie N Glud3, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany, (3)University of Southern Denmark, Department of Biology, Odense, Denmark, (4)University of Southern Denmark, Odense, Denmark
 
The vertical distribution and transformation of CH4，DMSP and Low Molecular Weight Organic Acids in the Yap Trench (645622)
Yuhuan Huang, Ocean University of China, Qingdao, China, United States, Haibing Ding, Ocean University of China, Qingdao, China, ChengJun Sun, First Institute of Oceanography, Ministry of Natural Resources, Marine Resources and Environment Research Center, Qingdao, China and Guipeng Yang, Laval University, Quebec-Ocean, Quebec City, QC, Canada
 
Ecology of meiofauna of the Atacama Trench – bathymetric variation and comparison with the less productive Kermadec Trench (646093)
Daniela Zeppilli, IFREMER, EEP-LEP, Plouzané, France, Mauricio Shimabukuro, IFREMER, REM/EEP/LEP, Plouzané, France, Daniel Leduc, National Institute of Water and Atmospheric Research, Wellington, New Zealand, Matthias Zabel, Univ Bremen, Bremen, Germany, Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark and Frank Wenzhofer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany
 
Hadal Bait-Attending Fish of the Atacama Trench (Western South America) Including New Snailfish (Liparidae) Species (647522)
Thomas Linley1, Mackenzie E Gerringer2, Amy Scott-Murray3, Johanna Weston1, Heather Ritchie4 and Alan J Jamieson1, (1)Newcastle University, School of Natural and Environmental Science, Tyne and Wear, United Kingdom, (2)SUNY at Geneseo, Geneseo, NY, United States, (3)The Natural History Museum, London, 3D Scanning and Visualisation Laboratory, Imaging and Analysis Centre, London, United Kingdom, (4)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan
 
Controls on microbial community composition in hadal trench sediments (649956)
Clemens Schauberger1, Bo Thamdrup2, Mathias Middelboe3, Blandine Trouche4, Sophie Arnaud Haond4, Lois Maignien5 and Ronnie N Glud1, (1)University of Southern Denmark, Department of Biology, Odense, Denmark, (2)University of Southern Denmark, Odense, Denmark, (3)University of Copenhagen, Department of Biology, København K, Denmark, (4)IFREMER, Plouzané, France, (5)University of Western Brittany, Brest, France
 
Deposition and early diagenesis of organic material in Hadal trenches. (650310)
Ronnie N Glud1, Bo Thamdrup2, Matthias Zabel3, Morten Larsen1, Anni Glud1, Hamed Sanei4, Robert Turnewitsch5, Kazumasa Oguri6, Alan J Jamieson7, Heather Ann Stewart8, Ashley Alun Rowden9 and Frank Wenzhofer10, (1)University of Southern Denmark, Department of Biology, Odense, Denmark, (2)University of Southern Denmark, Odense, Denmark, (3)MARUM - University of Bremen, Sediment Geochemistry, Bremen, Germany, (4)Aarhus University, Department of Geoscience, Aarhus C, Denmark, (5)Scottish Association for, Oban, Argyll, United Kingdom, (6)Japan A Marine-Earth Sci Tech, Yokosuka, Japan, (7)Newcastle University, School of Natural and Environmental Science, Tyne and Wear, United Kingdom, (8)British Geological Survey, Energy and Marine Geosciences, Edinburgh, United Kingdom, (9)National Institute of Water & Atmospheric Research, Wellington, New Zealand, (10)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany
 
Pressure-Retaining Sampler and High-Pressure Systems to Study Deep-Sea Microbes Under In Situ Conditions (650312)
Marc Garel1, Patricia Bonin1, Severine Martini2, Sophie Guasco1, Marie Roumagnac1, Nagib Bhairy1, Fabrice Armougom1 and Christian Tamburini3, (1)Aix Marseille Université, CNRS/INSU,IRD, Mediterranean Institute of Oceanography (MIO) UM 110, Marseille, France, (2)Laboratoire d’Océanographie de Villefranche (LOV), UMR 7093, Sorbonne Université, Villefranche-sur-Mer, France, (3)Aix Marseille Univ., Université Toulon, CNRS, IRD, MIO UM 110, Mediterranean Institute of Oceanography, Marseille, France, Marseille, France
 
Food Web Structure in the Mariana and Kermadec Trenches from Stable Isotope Analysis (650656)
Andrew Tokuda1, Mackenzie Gerringer2, Brian N Popp3, Natalie Wallsgrove3, Eleanna Grammatopoulou4, Daniel Mayor5 and Jeffrey Drazen6, (1)University of Hawaii at Manoa, Department of Oceanography, Honolulu, United States, (2)State University of New York at Geneseo, HI, United States, (3)University of Hawaii at Manoa, Department of Earth Sciences, Honolulu, HI, United States, (4)University of Aberdeen, Aberdeen, United Kingdom, (5)National Oceanography Center, Soton, Southampton, United Kingdom, (6)University of Hawai'i at Mānoa, Department of Oceanography, Honolulu, HI, United States
 
Plankton Respiration in the Ultradeep Waters over the Atacama Trench: Implications for Particulate Organic Carbon Sequestration (652764)
Igor Fernandez-Urruzola, Universidad de Concepcion, Millennium Institute of Oceanography, Concepción, Chile, Osvaldo Ulloa, Universidad de Concepción, Concepción, Chile, Wolfgang Schneider, Millennium Institute of Oceanography (IMO) and Departamento de Oceanografía, Universidad de Concepción, Concepción, Chile, Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark, Xinxin Li, South University of Science and Technology, Department of Ocean Science and Engineering, Shenzhen, China and Ruben Escribano, Instituto Milenio de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile
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